AERCO Modulex EXT 1530 - 3060 - Manual (Page 30)

MODULEX EXT 1530, 1912, 2295, 2677, 3060 Boilers
Installation, Operation & Maintenance Manual
3.12 CSD-1 MANIFOLD ASSEMBLY (SUPPLIED)
The installation of a flow switch, pressure/temperature gauge, and an ASME compliant safety
pressure relief valve designed for the boiler output capacity are required. These major
components are supplied with the boiler and must be assembled and wired when installing the
boiler at the site. The manifold assembly components supplied are:
• 3/4” Pressure Relief Valve
• Flow Switch
• Pressure/Temperature Gauge
The pressure relief valve and all other manifold components are shown in Figure 3-6.
Figure 3-6: Manifold Assembly and Components
To install the pressure relief valve and the other components shown, proceed as shown in
Instruction 4.0, below.
NOTE
Use Teflon tape or a suitable pipe joint compound for component
and piping connections described in the following steps. Refer to
Figure 3- 6 for component identification.
Installing the Pressure Relief Valve and Other Components
1. Attach manifold to the outlet supply connection on the boiler via the flanged connections.
2. Cut the flow switch paddle. For EXT models 1530 to 3060, cut for 4” pipe as directed in
the flow switch paddle packaging. For installations expecting less than a 10 gpm flow,
the switch must be adjusted as follows:
a) With no flow, turn adjustment screw on the switch counter-clockwise until the switch
trips.
b) Then turn screw 1/2 turn clock-wise and continue installation.
Flow Switch
3/4” Pressure Relief
Valve
Pressure/Temperature
Gauge
Page 30 of 138 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0095_0E
12/01/14 Phone: 800-526-0288 GF-139